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JEE Main & Advanced Physics Semiconducting Devices Question Bank Graphical Questions

  • question_answer
    The figure represents variation of triode parameter (m or rp or gm) with the plate current. The correct variation of m and rp are given, respectively by the curves

    A)            A and B                                   

    B)            B and C

    C)            A and C                                   

    D)            None of the above

    Correct Answer: C

    Solution :

                       r­p varies with ip according to relation \[{{r}_{p}}\propto i_{p}^{-1/3}\] i.e. when ip increases, rp  decreases, hence graph C represents the variation of rp. m doesn't depends upon ip, hence graph A is correct.


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